“ Ghosts ” fans disappointed that the show won’t be returning this fall can rest easy: They’ll still get their fix during two key holidays. In announcing Wednesday that “Ghosts” won’t return until midseason, the network did share that two special one-hour episodes are in the works. To bide your time before a full 22-episode Season 6 premieres in midseason, CBS has ordered a one hour Halloween episode to run in October, and a one-hour “Ghostmas” special to run sometime around the Christmas